'Suicide bomber' hits Russia's Volgograd train station

An explosion has ripped through a train station in the southern Russian city of Volgograd after reports that a suicide bomber blew herself up.

At least 16 people have been killed and many more are injured. In a statement, the Russian anti-terrorism authorities say the bomber was a woman.

In October, a female suicide bomber from the neighbouring restive province of Dagestan killed six people on a bus in the city.

Daniel Sandford reports.